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Digestive System
Part 1 of Paper
....changed into a form that can be carried through the bloodstream. The body's process of extracting useful nutrients from food is called digestion.
The of humans and other higher animals is the group of organs that changes food--carbohydrates, fats, and proteins--into soluble products that can be used by the body. Bo.... Part 2 of Paper
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It is important to chew food thoroughly to mix it well with saliva. Thorough chewing cuts food into small pieces that are more easily attacked by digestive juices. Food should not be washed down with quantities of liquid to avoid chewing.
From the mouth the food is swallowed into a transport tube, named the esophagus, or gullet. A flap called the epiglottis closes the windpipe while food is being swallowed. Peristalsis, a wavelike muscular movement of the esophagus walls, forces food dow.... |
| Number of words: 1451 - Approximate pages: 6 |
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